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Researchers Build First Molybdenite Microchip

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  • But (Score:4, Interesting)

    by bhcompy (1877290) on Wednesday December 07, 2011 @10:44AM (#38290626)
    But is it as common and cheap as silicon?
  • More info (Score:5, Interesting)

    by Geoffrey.landis (926948) on Wednesday December 07, 2011 @12:20PM (#38291760) Homepage

    Moly disulfide is mostly known as a lubricant.

    Interesting, but I wouldn't sell my stocks in silicon electronics yet. Silicon is way down the learning curve. I wouldn't bet a new semiconductor against it.

    Some of what the article says is a little dubious, like the fact that silicon "The surface likes to oxidise - it likes to bind with oxygen... and that makes its electrical properties degrade when you want to make a very thin film." Yes, it forms oxide easily. No, that doesn't "degrade" the electrical properties-- in fact, this is exactly why silicon is so incredibly useful in electronics. Oxide, and the fact that silicon oxide passivates the surface to prevent electron-hole recombination at the dangling bonds, is what makes silicon electronics possible. I note that the moly disulfide transistors use hafnium oxide for a gate. That's a high dielectric constant material that is indeed also used in silicon, but the silicon oxide is still the critical interface.

    By the way, I think there's slightly better info from eetimes http://www.eetimes.com/electronics-news/4212757/New-material-for-semis-said-to-beat-silicon [eetimes.com] or physicsworld http://physicsworld.com/cws/article/news/45056 [physicsworld.com]

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